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| -rw-r--r-- | doc/README.davinci | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/doc/README.davinci b/doc/README.davinci index a2e96a5..0204372 100644 --- a/doc/README.davinci +++ b/doc/README.davinci @@ -95,6 +95,20 @@ into the RAM. The programmers and UBL are always released as part of any standard TI software release associated with an SOC. +Environment Variables +===================== + +The DA850 EVM allows the user to specify the maximum cpu clock allowed by the +silicon, in Hz, via an environment variable "maxcpuclk". + +The maximum clock rate allowed depends on the silicon populated on the EVM. +Please make sure you understand the restrictions placed on this clock in the +device specific datasheet before setting up this variable. This information is +passed to the Linux kernel using the ATAG_REVISION atag. + +If "maxcpuclk" is not defined, the configuration CONFIG_DA850_EVM_MAX_CPU_CLK +is used to obtain this information. + Links ===== |